Contingencies and Commitments Contingencies and Commitments (Environmental Matters and Collective Bargaining Agreements) (Details) $ in Millions	Nov. 30, 2016 USD ($) employee	Nov. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Reserve for environmental remediation | $	$ 3.9	$ 4.1
Number of employees employed by the Company | employee	2,100
Percent of employees covered by a collective bargaining agreement	9.90%